模块化多电平DC-DC变换器中具有固有平衡能力的子模块电压纹波最小化最优循环调制

The modularity of the modular multilevel dc-dc converters (MMDCs) makes them a competitive candidate in medium voltage applications but brings the submodule (SM) voltage balancing issue. This article proposes an optimal circulant modulation method for minimizing the SM voltage ripples with inherent balancing capability proven at the same time, which allows smaller SM capacitors and avoids the high...